MAX2769
Universal GPS Receiver
Typical Operating Characteristics (continued)
(MAX2769 EV kit, V CC = 2.7V to 3.3V, T A = -40 ° C to +85 ° C, PGM = GND. Registers are set to the default power-up states. LNA input
is driven from a 50 Ω source. All RF measurements are done in the analog output mode with ADC bypassed. PGA gain is set to 51dB
gain by serial-interface word GAININ = 111010. Maximum IF output load is not to exceed 10k Ω || 7.5pF on each pin. Typical values
are at V CC = 2.85V and T A = +25 ° C, unless otherwise noted.)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
-0.5
2-BIT ADC TRANSFER CURVE
7
6
5
4
3
2
1
0
3-BIT ADC TRANSFER CURVE
-1.0 -0.8 -0.6 -0.4 -0.2 0
0.2 0.4 0.6 0.8 1.0
-1.0 -0.8 -0.6 -0.4 -0.2 0
0.2 0.4 0.6 0.8 1.0
DIFFERENTIAL VOLTAGE (V)
DIGITAL OUTPUT CMOS LOGIC
MAX2760 toc18
CLK
2V/div
SIGN DATA
DIFFERENTIAL VOLTAGE (V)
DIGITAL OUTPUT DIFFERENTIAL LOGIC
MAX2760 toc19
CLK
1V/div
16,368.10
20ns/div
CRYSTAL OSCILLATOR FREQUENCY
vs. DIGITAL TUNING CODE
2V/div
MAGNITUDE
DATA
2V/div
10
8
40ns/div
CRYSTAL OSCILLATOR FREQUENCY
VARIATION vs. TEMPERATURE
SIGN+
1V/div
SIGN-
1V/div
16,368.05
T A = +25°C
6
4
16,368.00
16,367.95
T A = -40 ° C
2
0
-2
-4
16,367.90
16,367.85
T A = +85°C
-6
-8
-10
0
4
8
12
16
20
24
28
32
-40
-15
10
35
60
85
8
DIGITAL TUNING CODE (DECIMAL)
TEMPERATURE ( ° C)
Maxim Integrated
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